3 papers
hep-th1998
About the Matrix model computation of three-graviton scattering
Marco Fabbrichesi, Gabriele Ferretti, Roberto Iengo
It is briefly explained why recent claims about the vanishing of the one-loop effective potential in Matrix theory, thus invalidating the possible agreement with supergravity, do n…
hep-th1997
Interaction of D-branes on orbifolds and massless particle emission
Faheem Hussain, Roberto Iengo, Carmen Nunez +1
We discuss various D-brane configurations in 4-dimensional orbifold compactifications of type II superstring theory which are point-like 0-branes from the 4-dimensional space-time…
cond-mat1996
Supercurrent Decay by Vortex Nucleation in the Presence of an Array of Pinning Centres: A Renormalization Group Approach
Roberto Iengo, Giancarlo Jug
We study the phenomenon of decay of a supercurrent in a superconducting thin film due to the spontaneous homogeneous nucleation of quantized vortex-antivortex pairs in the absence…